Engine.



No.. 896,514. PATENTED AUG. 18, 1908. S.- HZ BRUFDIGE 1 evhudr tend to the crooks 1 Application filed March 80, 1938.

?, SAMUEL Bimrrorori,

iited States, residing uzity Sonoiim and it I ve invented new and user 11 improvements Engines, of which the i'ollmviug a specification.

My inventieri rciatcs to improvements in engancs or motel-sin Which it pair of pistons adopted to rec jrocate to and from each 1 on consists in the move; connections of the i storm 01 ouch of a, pair of cjilin dors ll t they operate in unis 1, and the power developed. in each. cylini is transrnittod to each. of 1* pair of cranks upon the y it u ts mechanism When-or by the liilp'milli'iff l driiitiied. to and or i and in detariis of I be more iuiiv .lre azrmznpo- 11 p0 n rave i re any suitable supporting; fmme. 10 1 shown sue-h r t-" iithin each c "um r, zu'e )i prs cu rods 4 of their (:jvlindc Where the engines as when steu piston ro hr stu hich has suitable journal DUX "lhc piston rods 4: he e righ" giod ijXi(*U sions 4- exterior to fl; .oztr l-viizidcr heads, in hcntzisshom: zi't i", so

'thormls ntoposirodse .msclvos; u .isious 4 pzzss'hetwccu l rid connect rcspcw h the -ros:-'-hcau-8 ol' the opposing s to my, the piston rod i of and these rodsurecg. that his second hem tion purzzlicl \\i l Specification of Letters Patent.

Patented Aug. 18, 1908.

Serial No.

the cylinder i extending our i' i 'ough the rear of the cy'imdcr hunt zit right ring at i, then again held, to form the extension 2 and this n cmmrclod \H h the cross-hood 8 of the? cyimdo in like manner thc piston. rod of the c liodcr i3 forms two bends passing between the cylinders, and connects with the cross-hood i; of the cylinder. Thus each of the rear pistons 2 is directly connected with the cr iced oi the other cylinder, and the cranks ii are at zso degrees ofeach other, it will be see that one piston will be approaching the center of the cylinder, 'Whiic the other is recoding therefrom. fit the some time, the piston 33 of the first cylinder will be approaching the piston in the cylinder, whiie the piston I; of the other cylinder Will recedc from the center in unison with the movement of v pisl on 2 in these rec der W h the cross-head and crank of the opposed cylinder The cross-heads and guides of those cylinders are at such oint es to divide the power applied to them borough the piston rods 6 and the extension rods 4", and for this purpose i have found that the guides and cross-howls 1'1 v approximately midway between the line of travel of the forward piston rods, and the rods 4 which connect with tlicsmue cross-heads "rt ixen the impeding fluid under constant pressure as steam or unimpressed air, it may he admitted and exhausted to and from the spaces between the pistons 2 and 3, and

:v on the pistons have thus been forced to in outcr ends of their respective strokes, the impeding; fluid may" he admitted at the outer ends oi the cylinders to forco them back egain; thus melting each pair of Pistons d0u hie-acting in its own cylinder.

Various Volvo mechanisms may be employed for this purpose. in the present case have shown hoilow rotary valves l5 15 the latter being located near the ends of the cyiiiiders and the former being located near the intermediate port of the cylinders, said \ziivrs being turoehle in valve chambers 18 which are located between the r 'liuders, and out of the line oi" movement ol the rods 4*" 'lhose vzdvcs ztrc ztctuoted by a rod or shaft 17 having upon the end contiguous to the shafts hevchgeur it; which meshes with a 3 of the cylinder A, the ports from the ends of engines of either two or four cycle type; the

similar l9 r mounted upon. the crank shaft, the proportions being such that the valves make a complete revolution for each revolution of" the main shaft.

The ports are so (llSPOSGCl. that when the valves are in proper position to admit the iinpelling medium between the pistons 2 and the said cylinder will communicate with the exhaust passages 20; at the some time the ports at the ends of the cylinder B will be opened, and the pistons of that cylinder being at opposite ends will be impelled toward the center. The exhaust port from the center of this cylinder will then he open to the exhaust passage 20, and the ilow of the impelling medium will be such that power is applied alternately from-the center and ends of '1 cylinder, so that one pair olpistons is being impelled outwardly, while the other pair is being inipelled tows d each other, and. by reason of the connection of each ol the pistons 2 of" the respective pistons with the cross-heads of the opposite cylinders, the power applied. to the front pistons in each cylinder will be transmitted directly to the crank. shaft through the cross-heads and con necting rods, while the power from the rear pistons will be transmitted through the supplemental connecting rods to act in. unison "upon the cross-heads, cminectingrods and cranks oi the opposing cylinders.

It will he nntniiest that the some construction nnty he applied to internal coinhustion conne itiOIiS being made between the pistons of the cly inders end the cronies of the opposing cylinders.

Having tlnis d escrihed my invention, what i claim; and. desire to secure by Letters Pet ent is-- 4 l. The combination in on engine of it shalt having; opposed cranks, a pair of cylii'iders, two pistons movable in each of the cylimlers, cross-heads for said pistons, means by which the pistons of a, cylinder is connected w ,h own. cross-heed, and the 'ston is connected i directlywith. the i 4 owl o the other cylinder, means for l edn'iitting en. iinpelling medium between. the pistons,-:ind moons connecting, each of the cross-hesds with one of the cranks.

2. in an en ine, a shaft having opposed cranks, guides withcross-heads slidable in line with the cranks, rods connecting the cross-heads with tllcfiiltllkS, cylinders each having two pistons, one of which is connected directly with its own. cross-hem! and. crank, and the other is connected indirectly with the cross heml and crank oi' the opposite cylinder, valves by which the in'ipelling" medium is admitted to impel the pistons of the two cylinders in opposite directions in unison.

31 in on engine of the character descrihcd t1, shaft having opposed cranks, cylinders errnnged'side by side, connecting rods from" the cranks, cross-heads to which they are united, and guides upon which the cross-heads slide in line withthe cranks, two pistons IIlOV2Ll lO in ouch cylinder, the front pistons having ol'l set connections with the cross-heads, and the roar pistons having o'll'set conniwtions with the cross-heads of the opposite cylinders, with ol'l'scts substantially equal to and belsncing those of the forward pistons.

4. in an .itppziratus of the character described, :1 pair ot cylinders each having two pistons, a shaft having opposed cranks, 2t

cross-heed for each piston and guides for the crossdiesds, one of said pistons being con.- neeted directly with its own cross-heed and crank and. the other piston being connected indirectly with thexeross-hesd and crank 01' the opposite cylinder, valves located. hetweon the cylinders having ports through wl'iich the impelling medium alternately edn'iitted between the pistons and exterior thereto, and so timed that the pistons of one cylinder are moving outwardly, while those of the otoer cylinder are moving ii'iwzirdly.

in testimony wl'icreoi l. have hereunto set my hand in presence oi two subscribing witnesses.

S/iidlii lli Ii. ll RU Dltlll 

